Luke Coldiron comes down from his ranch in the high Sangre de Cristo Mountains of New Mexico to San Francisco to win a fortune in a game of high stakes poker. Tom Gallatin is deep into a game in which the stakes are even higher. He is the white man who guards Mingren Yang’s Chinatown empire, not knowing it is an empire built on slavery of young Chinese girls, opium, and murder. Ging Ti, a lovely Chinese girl, has sold herself in Shanghai for money to help her family buy a fishing boat after loosing theirs to a typhoon. She is shipped across the Pacific for a wealthy Chinaman in San Francisco. Black Drummond is the owner of the wildest and most dangerous saloon in Frisco and the biggest shanghaier on the Barbary Coast. Fallon is the leader of a gang of card cheats who sets out to rob Coldiron of a fortune at cards.